Filling-tension device



Feb. 23 1926.

. P. PELLETIER FILLING TENSION DEVICE Filed April 17, 1925 5 Sheets-Sheet 1 l lll'lllll W1 AT'l'EJZiJEUS:

Feb; 23 1926.

FE. m. 3 4

Feb. 23 1926.

P. PELLETIER FILLING TENSICSN DEVICE Filed April 17, 1925 5 Shets-Sheet 3 Feb. 23 1926.

P. PELLETIER FILLING TENSI 0N DEVICE 5 Sheets-Sheet 5 Filed April 17, 1925 Patented Feb. 23, 1926.

' UNITED STATES PETER PELLE'IIER, OF LAXVR-ENCE, MASSACHUSETTS.

FILLING-TENSIGN DEVICE.

Application filed April 17, 1925.

p which the following is a specification.

My invention is adapted particularly for use on dobby looms and is especially useful. with looms for weaving silk, art-ificial'silk and other materials of similar character. It is well known that in weaving these materials there are often shiny picks and kinky filling due to the fact that all the filling is not drawn from the bobbin under equal tension and any change in the tension, however slight, in laying the filling between the warp threads mars more or less the sheen of thecloth so that it will look more or less spotted.

My invention is intended to overcome this fault by putting the filling under tension after it has been laid iuthe warp and before it has left on its return pick.

My invention consists in connecting to each side of two harnesses, which may be supplied for the purpose, a pair of tension rods so that as the harnesses are reciprocated in opposite directions by the usual mechanism these rods will also be reciprocated vertically.

My invention will be understood by reference to the drawings in which it is shown in its preferred form, only so much of the loom being shown as is necessary to point out my invention.

Figure l is across section of a loom embodying my invention, looking from the breast beam toward the harness.

Fig. 2 is a vertical section on line- 2 -2 of Fig. l.

Fig. 3 isan enlarged sectional detail of parts shown In Fig. 2. V

Fig. 4 is an enlarged elevation of one 7 of the harnesses.

Fig. 5 is a section on line55 of Fig. -l-. Fig. 6 1s a plan View showing'thc relation of the breast he ein to the harnesses to which my tension rods are attached.

Fig. 7 is a section on line 77 of Fig. 6.

Fig. 8 shows in perspective a portion of the breastbeam with one of the rod guides attached thereto.

Fig. 9 shows one of the rod guides attached to the frame in front of the harnesses.

Serial No. 23,942.

Figs. 10 and 11 show details of the yoke, and

F 12 and 13 show diagrammatically the operation of my improvement.

I have shown in the drawings only the two harnesses to which my improvement is attached. In practice there will be in addition the usual warp-carrying harnesses which may be located with their operating mechanism between the harnesses shown.

1 is the frame which is of the usual construction in dobby looms, showing at its upper left hand corner at 2 a portion of the dohby mechanism, which being well known is not herein described. This mechanism comprises among other parts the usual harness levers 3 and as shown a yoke l of new construction to which are attached the usual cords 5 running on pulleys 6 and carrying at their lower ends the front harnesses 7. The rear harness is hung from cords 51 and is operated in a usual manner. I prefer to use a yoke of the construction shown in Figs. 10 and 11 comprising two closed loops. as being more positive in character. .Vhile there may be any convenient number of harnesses, I have shown only the two necessary to illustrate my invention, the other harness being hung between the harnesses 7 and 8, the frame being wide enough to support the necessary number of harness levers, etc. The front harness carrying my tension rods is marked 7 and the rear harness is marked 8.

As itis very desirable that there should be as little vibration to my tension rods as possible, I have provided guides 9 for the back harness and other guides 10 for the front harness, these guides being metal strips against which these harnesses slide, the guide 9 extending downward from the arch of the frame 1 towards the floor and being attached thereto by springs 11, while the guides 10 in like manner extend down in front of and below the lowest position of my tension rods. The guides 1.0 are slotted us at 12 and 1 3 to allow my tension rods to pass through them and to have-a vertical movement therein corresponding with the vertical movement of the harnesses (see Fig. 9). l-l is the breast beam which carries guide straps 15 mounted thereon, each guide strap ha *ing preferably a horizontal part by which it attached to the breast beam and a vertical part having slots 16 and 17 in which the ends of the tension rods may reciprocate this vertical portion of the guide strap being set out from the breast beam to allow the ends of the ten sion rods to be upset or otherwise prevented from being aecid'e'n'taily withdrawn there from Figs. 3 and 8).

The tension rods are marked 19, 20, 21 and 22. They are shown in section in Figs. 1 and 7, in side View in 2 and 3 and in plan in Fig. 6. it will be understood that two of these rods and 21 are mounted in the rear harness and 19 and 22 in the front harness. 23 is the lay which is operated in the usual manner and its shuttle race is preterably slotted as indicated at 2-;t in 2, withnarrow slots so as not to intei'ter'e with the nioven'ient ot the tension "rods when two of these rods arein their lowest position. The movement or the rods, that is of the harness cmitail'iing them, being as usual is such that while the l ayis nioi' 'ing and the race is swingingupward the rods willbe up time the highest point of the are or movement of the lay and hence will not interfere 'withthe lay or shuttle when the parts are properly timed. I

The utility and operation ol myinuention will be understood particularly from 12 and 13. In these figures the shuttle is indicated running to the shuttle box 3. doing so it has laid the a in the war-. from the further edge of the cloth, and further end of the filling from the shuttle is indicated by the turn or. the "filling marked 26. It will be understood that the cloth is narrower than the distance between the rods 19 and By the time the shuttle has reached the point indicated in Fig. 12 the harnesses change bringing the tension rods 19 and 20 into the positions shown in Fig.13. The filling a which has justbeen laid in warp extends from the point 26 to the shuttie, so it will be seen that the filling runs from this point to the shuttle betweenthe rods 19 and 20. The harnesses then bring the rods into the position shown in Fig. 13 so that the rods 19 and 20 create a tension on the filling thread a, it being understood tnat the rods engage the filling at a point near their middle. 7 While therods and 22 also have the same motion as the rods 19 and 20, bringing them into the positionsshown in Fig. 13, as they lie outside the width of the cloth there no filling thread for thenito actuijon' at this time. 7

v hen the parts have come into the position shown in the harnesses immediately inove back into their original position separating the rod 20 fro 'n the rod lama rod 21 from the rod 22, the other liar- Lnesses (not shown) being operated to open the shed as usual, and the shuttle is immediately returned through the shed as iiefwly opened pulling the slack end itsthread at the salyage through the shed and get-aging the shuttle be: at the 'ap' dsae side of the cloth. At this moment the harnesses move again so that the rods 21 and 22 engage the thread in the rear of the shuttle applying tension to it, thus drawing it up evenly into the wrap and then releasing it so that the shuttle may return in the same way back to the other side again. The rods 19 and 20 being outside of the Width of the cloth are inactive at this moment although of course being moved by their harnesses. It will of course be understood that the lay in its. beating up co-operates in the usual way with the other parts.

So far as I know no means have ever been applied outside the" shuttle to place the filling under tension, nor has any means been used to apply tension to the Pick which has been laid in the filling to draw it smooth in the warp, it being the sua1 practice to rely "upon. the tension in the shuttle to do this. With delicate wearing, however, where e ziact evenness is required, such for example as in Weaving silk, it is Very fe s tial that exactness in the layingof the Till shall be maintained in order that there ma be no spots which will inar the sheen of the woven 'piodu'dt, these spots occurring usually where there is unevenness of tension in the Weaving. For thesereasons therefore I do not limit myself to the "precise form of the invention shown in the drawings, as. I believe it may be otherwise embodied. It is not necessary in out my i'nve'iitiori that the harnesses shall be iven a full mot-einent. in fact, inte ration I have found that the tension rod harnesses may be satist'ac'torily operated with but a ha-lf'thio'w'.

It will also be understood as; stated above that my improvement may be used upon a loom having any desired number of harnesses properly, inount'ed therein and operated thereby. Forsiniplioity only two harnesses are shown.

hat I claiin'as my invention is:-

1. In a loom of the kind described having a shuttle and a breast beam, two harnesses and means :to'r reciprocating tl'iei'n in opposite'directions, each harness carrying a ipa'i'r of rods extending horizontally therefrom acrossthe path of the shuttle in the 'direc- 1 tion of the breast whereby when reciprocated ertically they will engage the shuttle thread and'take up the slack therein.

2.1m a machine of the 'ki'n dJdesEEribed containing a breast beam, two harnesses, tens-ion rods extending horizontally from said harnesses toward said breast beam, and guide plates located on said breast beam to native and guide the ends of said rots as said mamas reciprocate by said ha r'iesse's.

3. in a machine of the kind deso ed, a breast beam, two harnesses, fin'eahs tor reciprocating them "Vertically in opposite directions, veitical plate-s one pair located in front of said 'hfilTIlQSZQS and the ot'lieiiii" the rear thereof to guide the harnesses in tension rods mounted on each side of the their vertical movement, said harnesses hav- Warp, and means for operating them coming tension rods extending from them toprising harnesses whereby they will move award the breast beam, and said front guide across the path of the shuttle thread and 5 plates having slotted openings therein to engage and take up slack therein.

assist in guiding said tension rods.

4. In a machine of the kind described, PETER PELLETIER. 

